Stop-motion for spinning.



No. 729,384. 7 Q PATENTED MAY 26, 1903.

W. G. MORRISON.

- STOP MOTION FOR SPINNING. APPVLIOATION FILED SEPT. 2. 1896.

NO MODEL.

UNITE STATES Patented May 26, 1903' PATENT OFFICE.

WALTER MORRISON, OF WILLIMANTIC, CONNECTICUT; HUBER CLARK, ADMINISTRATOROF SAID MORRISON, DECEASED, ASSIGNOR TO THE ATWOOD-MORRISON COMPANY, OFSTONINGTON, CONNECTICUT, A COR- PORATION OF JERSEY.

STOP-MOTION FOR SPINNING.

SPECIFICATION formingpart of Letters Patent No. 729,384, dated May 26,1903.

Application filed September 2, 1896. Serial No. 604,637. (No model.)

To aZZ whom it may concern:

Be it known that I, WALTER G. .MORRISON, a citizen of the United States,and a resident of Willimantic, in the county of Windham and State ofConnecticut, have invented certain new and useful Improvements in Stop-Motions for Spinning-Frames,"of which the following is a full, clear,and exact description, whereby any one skilled in the art can to makeand use the same.

Myinvention relates to the class of devices used in spinning-frames forautomatically stopping the winding operation when for any reason astrand or thread shall be broken;

and the object of my inventionis to provide a device of this class thatshall be positive in operation, that will respond quickly upon thebreaking of a thread, and that shall preserve an even tension upon thethreads being wound, the device providing means whereby the supply ofthread being wound is cut off rather than by the stopping of any of therunning parts of the machinery.

Referring to the drawings, Figure 1 is a 2 5 detail diagram view, inside elevation, of parts of a spinning-machine and showing the relativelocation of my improved stop-motion de vice. Fig. 2 is a detail diagramview, in front elevation, .of parts of a spinning-machine,

showing my improvement. Fig. 3 is a detail bottom view of thestop-motion device. Fig. 4 is a detail side view of the stop-motiondevice shown in position to stop the winding operation. Fig. 5 is adetail view showing in front and side elevation drop-wires and illus--trating the method of securing them to the foot.

In the accompanying drawings the numeral 1 denotes supply-bobbinsmounted on the blade of a spindle 2 and from which thread 3, as silk, issupplied to the bobbin 4, upon which it is wound',,thethread passingthrough the thread-guide 5. This thread-guide is mounted on areciprocating thread-guide rail 4 5 in a manner well known to this classof machines, and further description is deemed unnecessary. I Myimproved device is especially applicable in the twisting and doubling ofsilk threads motion therefrom by frictional contact. This eccentric isoperatively connected to abellcrank lever S, mounted on a pivot '7, theopposite end ofthelever bearing a stud 9, to

which is connected a drag 10.

In spinning-machines in connection with which my device is readilyadapted the spindles are arranged in groups placed close together, thethreads from each spindle of a group being wound on a single bobbin. Indevices used on spinning-machines of this class where the rotation ofthe receiving-bobbin ceases in the operation of the stop device adifficulty occurs from the fact that the loose ends of the light threadbeingwound float about in the currents of air caused by the' revolutionsof the spindles or like parts, and

become entangled therein or adhere to other threads, causing thebreaking of other strands of thread, and this will continue for aconsiderable distance along a spinnin g-frame before the operative hastime to take up the loose ends or stop the machine. In my improveddevice I have overcome this difficulty by continuing the rotation of thereceiving-bobbin, thereby Winding up all loose ends. In this operation,however, it has been found necessary to break the remaining strands thatare wound into a singlethread on a bobbin in order to prevent thewinding of imperfect threads.

A frame consisting of upward-projecting side parts 11, downward-projecting side parts 12, and forward-projecting side parts 13 is mountedunderneath the bobbin 4:. A triplever 14 is pivoted between theforward-projecting side parts 13, and a drop-wire 15, appurtenant toeach spindle in the group, is pivoted on said lever. Each drop-wire issecured to afoot 16, projecting therefrom at an angle preferablyhorizontally, the weight of this foot being sufficient to swing each ofthe dropwires backward when not supported in an upright position. Arocking lever 17 is pivoted between the downward-projecting side parts 2of the frame and is connected by a link 18 with the trip-lever 14. .Thisrocking lever 17 is provided with cam-surfaces 19, each located at anangle with the other, and a spring 20, secured to the frame, bearsagainst these camsurfaces. 'lhread-engaging arms 21 project forward fromthe rocking lever in a position to engage the threads from thesupply-bobbin, one of these arms being provided appurtenant to eachspindle from which thread is being supplied. The spring 20 is providedfor the purpose of causing the rocking lever 17 to operate with someforce after a certain degree of movement has been imparted to the deviceby means of engagement of the drag 10 with a foot 16, the spring bearingwith considerable force against oneor the other flat cam-surfaces 19 andcausing rotation of the parts under the impulse of the spring after thedrag has ceased to operate thereon.

The operation of the device is as follows: The parts being in therelative position shown in Figs. 1, 2, and of the drawings, with thethread 3 projecting upward through eyelets in the thread-engaging arms21 and in engagement with the ends of the drop-wires 15, as the drag 10is reciproeated by the eccentric 22 the drag escapes contact with thefoot portion 16 of the drop-wire. \Vhen a thread breaks for any reason,the drop-wire is tipped backward by the weight of the foot 16 into thepath of movement of the drag 10, the drop-wire engaging a fixed stop onthe ten sion-lever. As the drag encounters the foot of the drop-wire thetrip-lever is rocked on its pivot, and, through means of theconnecting-link 1S, throws the threadengaging arms 21 on the rockinglever 17 downward and backward, which movement is accelerated as thespring 20 comes in contact with the next cam-surface on the rockinglever. This breaks the remaining thread or threads from the group ofspindles, and the ends are immediately wound upon the bobbin 1 untilsuch time as the operative shall take up the ends and start the machinein operation.

It is obvious that a single eccentric device may be used for operating anumber of the stop motion devices appurtenant to each group of spindles,the upper branch of the bell-crank lever in this instance being attachedto the pivot 7 and arms extending downward therefrom appurtenant to eachof the stop-motion devices. The drags may exthe foot 16.

custom to secure the drop-wire to the foot in the process of casting,but this necessitated the removal of the foot from the machine and thesubstitution of a new one. By my improved method of attachment the wirecan be easily and quickly removed from the foot with the latter in placeand a new one substituted at any time when needed. A groove 23 is formedlengthwise along the upright arm of the foot, into which the shank ofthe dropwire 15 is inserted. The wire maybe held in this groove by anydesired means, the side parts of the groove preventing the wire frommoving sidewise. In the preferred form of the device a hole 24 is madethrough the upright arm of the foot portion 16, the lower end of thewire inserted within this hole and then bent backward, resting againstthe back of the upright portion of the foot. The backturned portion ofthe wire prevents it from being forced out of the groove and the sidewalls of the groove prevent any sidewise movement. This manner ofattachment of the drop-wire provides an inexpensive means of attachmentand one in which a wire may be readily removed and replaced by a newone.

I claim as my invention- 1. In combination in a spinning-frame, a pluralnumber of spindles adapted to receive supply-bobbins, a drop-wirearranged to engage a thread from each of said bobbins, thread-engagingarms to engage each thread from a set of bobbins, each of saidarmsbeing' mounted on a common swinging support, and means adapted to beconnected with the dropwires for swinging said support to simultaneouslysnap all the threads common to a set of bobbins.

2. In combination in a spinning-frame, a plural number of spindlesadapted to receive supply-bobbins, drop-wires arranged to engage threadsfrom said bobbins, thread-engagin arms to receive each thread from a setof bobbins, said arms being mounted on a common swinging support, andmeans set in operation by the drop-wire on failure of the thread forforcibly swinging said support to simultaneously break all of thethreads.

3. In a spinning-frame, in combination with a number of spindles adaptedto receive supply-bobbins, a drop-wire appurtenant to each of thethreads, thread-en gaging means appurtenant to each drop-wire, means forinitially moving the thread engaging means, and means for forciblymoving said means to snap all of the threads on the breaking of a singlethread.

4. In combination, a base having a lengthwise groove, and an openingthrough the base depthwise of the groove, a drop-wire with its shanklocated in the groove, and with its end projecting through the openingand backturned along the base.

WALTER G. MORRISON.

Vitnesses:

HUBER CLARK, HENRY F. PARKER.

IIO

